Problems with CCE and Avisynth

I’m trying to convert an avi file with ac3 sound using cce and avisynth but I get the following error when open the avs file with windows media player :

ACM failed to suggest a compatible PCM format.

Is it possible to open and avi with ac3 sound using AVISynth ?

Yes you can, but you need to have an AC3 codec installed first, such as AC3Filter.